package com.spring_aop_1.myPointcut;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;

/**
 * 通过注解来实现aop
 *
 * @Aspect 标注该类是一个切面
 * @Author: hudy
 * @CreateTime: 2023-05-05
 */
@Aspect
public class AnnotationPointCut {

    @Before("execution(* com.spring_aop_1.service.iml.UserServiceIml.*(..))")
    public void before() {
        System.out.println("========方法执行前==========");
    }

    @After("execution(* com.spring_aop_1.service.iml.UserServiceIml.*(..))")
    public void after() {
        System.out.println("==========方法执行后=========");
    }

    /**
     * 在环绕增强中，我们可以给定一个参数，代表我们要获取处理切入的点
     */
    @Around("execution(* com.spring_aop_1.service.iml.UserServiceIml.*(..))")
    public void around(ProceedingJoinPoint joinPoint) throws Throwable {
        System.out.println("环绕前");

        Signature signature = joinPoint.getSignature();// 获得签名
        System.out.println("signature:" + signature);
        // 执行方法
        Object proceed = joinPoint.proceed();

        System.out.println("环绕后");
        System.out.println(proceed);
    }
}
